Thoth natively supports a differential analysis

[TomasTomecek]

Is your feature request related to a problem? Please describe.

As a Thoth user, I'd love to compare an advise of a PR with an advise done on the main branch easily with a single thamos advise command.

High-level Goals

Running advise produces results that only contain difference from a different advise.
These are available both via Web UI and on CLI.

Describe the solution you'd like
That's up to you :)

Additional context
There already is a compare button in the Web UI. Sadly the past advises are not tagged in any way so it's hard to tell what to compare against.

Acceptance Criteria

• Running thamos advise produces results with difference from another analysis.

[sesheta]

@TomasTomecek: This issue is currently awaiting triage.
One of the @thoth-station/devs will take care of the issue, and will accept the issue by applying the
triage/accepted label and provide further guidance.

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[goern]

/sig user-experience
/priority important-soon

[harshad16]

This is regarding having similar compare support in thamos.
Acceptance criteria

• Add additional command for compare of different advise analysis
• Utilize the function of the git diff.
• Figure the way to store the advise id (small term cache) for comparision.
• Verify the result w.r.t to the search/compare.

Story Point: [Epic][13pt]

[Gkrumbach07]

Acceptance Criteria Issues (covers points from #257 (comment))

• [2pt] Add new thamos diff command thamos#1147
• [3pt] Print function that shows differences between advise justifications thamos#1146

[goern]

/close
as we work on it on

[sesheta]

@goern: Closing this issue.

In response to this:

/close
as we work on it on

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.